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Heart|Lab Grown|IGI

1.55ct E FL Heart Lab Grown Diamond

VG • E/FL • IGI LG816615975

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG816615975

Diamond specifications and retailer prices

From £475 GBP
$636 USD
As of October 30, 2026
Save £2,145 GBP (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,620 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.55ct lab-grown heart diamond

This 1.55ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG816615975 or 816615975. Listed at 19 retailers as of October 30, 2026, with prices from £475 to £2,620, a £2,145 spread on the same certified stone. Brilliant Earth lists it at £2,620. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
E
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615975
Dimensions8.07 × 7.22 × 4.56 mm
L/W Ratio1.12
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.07 mm7.22 mm1.55 ctE / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615975
Side View
Table 57.0%Crown 35.5°Girdle: Slightly ThickPavilion 37°Culet: NoneDepth 56.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,620 GBP|Low: £475 GBP|High: £2,941 GBP|Avg: £1,361 GBP|-10.9%
Brilliant Earth
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
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Retailer 17
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Retailer 19
October 31, 2026
Retailer 6£475 GBP
Retailer 18£516 GBP
Retailer 8£551 GBP
Retailer 9£551 GBP
Retailer 15£610 GBP
Retailer 17£683 GBP
Retailer 4£734 GBP
Retailer 2£880 GBP
Retailer 5£880 GBP
Retailer 7£900 GBP
Retailer 12£1,012 GBP
Retailer 19£1,281 GBP
Retailer 10£1,549 GBP
Retailer 3£1,810 GBP
Retailer 11£1,901 GBP
Retailer 16£2,196 GBP
Retailer 13£2,324 GBP
Retailer 14£2,330 GBP
Brilliant Earth£2,620 GBP

38 data points across 19 retailers

19 retailers£475 GBP to £2,620 GBP

A
Cheapest Retailer
-
£475 GBP
$636 USD
A
Retailer 2
-
£516 GBP
$692 USD
View
A
Retailer 3
-
£551 GBP
$738 USD
View
Retailer 4
-
£551 GBP
$738 USD
View
Price last confirmed 15 days ago
A
Retailer 5
-
£610 GBP
$817 USD
View
Final sale: no returns
A
Retailer 6
-
£683 GBP
$915 USD
View
A
Retailer 7
-
£734 GBP
$984 USD
View
B+
Retailer 8
-
£880 GBP
View
B+
Retailer 9
-
£880 GBP
$1,179 USD
View
B+
Retailer 10
-
£900 GBP
$1,206 USD
View
B+
Retailer 11
-
£1,012 GBP
ZAR 21,910 ZAR
View
B+
Retailer 12
-
£1,281 GBP
$1,717 USD
View
B
Retailer 13
-
£1,549 GBP
$2,075 USD
View
B
Retailer 14
-
£1,810 GBP
$2,425 USD
View
B
Retailer 15
-
£1,901 GBP
$2,548 USD
View
B
Retailer 16
-
£2,196 GBP
SGD 3,977 SGD
View
B
Retailer 17
-
£2,324 GBP
View
B
Retailer 18
-
£2,330 GBP
$3,122 USD
View
Most Expensive
B
Brilliant Earth
21421539A · Oct 30
£2,620 GBP
$3,510 USD
View
18 more retailers have this diamond
Prices start from £475 GBPSave up to £2,145 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.55ct Heart
£475 GBP